6502 Single Board Computer (SBC) Design |
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Eagle CAD: v1.0 Schematic
Eagle CAD: v1.0 PCB Layout
Printed Circuit Board
2004A 4x20 LCD Display
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Overview This initial design uses 32KB for ROM and 32KB for RAM at locations $0000 and $8000, respectively.
The 20x4 LCD is driven by a VIA (versatile interface adaptor) with 512B for data/control starting at $7FE0.
Power to the SBC is via a 5v miniUSB connector or a 5v diode-protected connector.
Communication with the 6502 SBC is via terminal software and the W65C51N ACIA UART.
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Modern CMOS Parts Used: - CPU: W65C02S - VIA: W65C22 - ACIA (UART): W65C51N - ROM: SST39SF040 - RAM: AS6C4008
- LCD: 2004A - MONITOR: FN ATMega2560
CPU VIA ACIA ROM: SST39SF040 RAM: AS6C4008
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